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Schedule III Real Estate And Accumulated Depreciation (Schedule Of Changes In Rental Properties And Accumulated Depreciation) (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2014
Schedule III Real Estate And Accumulated Depreciation [Abstract]        
ASSET BASIS, Balance at beginning of year $ 248,468us-gaap_RealEstateGrossAtCarryingValue $ 279,490us-gaap_RealEstateGrossAtCarryingValue $ 307,153us-gaap_RealEstateGrossAtCarryingValue  
ASSET BASIS, Additions to buildings and improvements 3,058us-gaap_RealEstateOtherAdditions 6,585us-gaap_RealEstateOtherAdditions 17,168us-gaap_RealEstateOtherAdditions  
ASSET BASIS, Disposition of buildings and improvements (32,646)us-gaap_RealEstateCostOfRealEstateSold (29,463)us-gaap_RealEstateCostOfRealEstateSold (32,488)us-gaap_RealEstateCostOfRealEstateSold  
ASSET BASIS, Impairment loss (4,295)us-gaap_RealEstateOtherDeductions (8,144)us-gaap_RealEstateOtherDeductions (12,343)us-gaap_RealEstateOtherDeductions  
ASSET BASIS, Balance at end of year 214,585us-gaap_RealEstateGrossAtCarryingValue 248,468us-gaap_RealEstateGrossAtCarryingValue 279,490us-gaap_RealEstateGrossAtCarryingValue  
ACCUMULATED DEPRECIATION, Balance at beginning of year 84,112us-gaap_RealEstateAccumulatedDepreciation 88,399us-gaap_RealEstateAccumulatedDepreciation 97,919us-gaap_RealEstateAccumulatedDepreciation 68,533,000us-gaap_RealEstateAccumulatedDepreciation
ACCUMULATED DEPRECIATION, Depreciation for the period end 6,549us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense 7,294us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense 8,788us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense  
ACCUMULATED DEPRECIATION, Depreciation on assets sold or disposed (13,884)us-gaap_RealEstateAccumulatedDepreciationRealEstateSold (10,523)us-gaap_RealEstateAccumulatedDepreciationRealEstateSold (16,136)us-gaap_RealEstateAccumulatedDepreciationRealEstateSold  
ACCUMULATED DEPRECIATION, Impairment loss (1,374)us-gaap_RealEstateAccumulatedDepreciationOtherDeductions (1,058)us-gaap_RealEstateAccumulatedDepreciationOtherDeductions (2,172)us-gaap_RealEstateAccumulatedDepreciationOtherDeductions  
Accumulated Depreciation, Balance at end of year 65,933,000us-gaap_RealEstateAccumulatedDepreciation 84,112us-gaap_RealEstateAccumulatedDepreciation 88,399us-gaap_RealEstateAccumulatedDepreciation 68,533,000us-gaap_RealEstateAccumulatedDepreciation
Aggregate cost for federal income tax purposes $ 235,000,000us-gaap_RealEstateFederalIncomeTaxBasis